Dyeing ob coloring of pboducts hade with cellulose acetate



mama Feb. 22,1921.

UNITED- TATES PATENT OFFICE,-

GEORGE HOLLAND ELLIS, OI SPONDON, NEAR DERBY, ENGLAND, .ASS'JQGI N'OE, T0 AMERI- CAN OELLULQSE AND GBEIICAL MANUFACTURING DURATION OI finnawm.

name on cononnro or rnonuo'rs ms am cnnnunosn acn'ra'm.

.llo'llrawlng'. Application filed September 25, ms, Serial no. sea-m, aim in Great Britain an, 27,

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In the specification of m application for United States Patent S. 0. 664,780 filed Sept. 25, 1923, there is described a processfor dyeing, coloring, printin 'or stencilling yarns, threads, filaments, fa rics, films or other materials consisting of cellulose ace 'tate' alone or associated with other fibres or materials' In the s ecification of my saidapplicati on tor Unite States patent I have proposed to apply for the dyeing, printing or stencilling of such goods'o'r materials any organic compounds or coloring matters whicheare fa vourably constituted or have an aflinity for cellulose acetate or are capable of dyeing or coloring the same but which are insoluble,

practically insolu le or of relatively low solubility in water, all 6'). which are hereinafter included in the expression relatively water-insoluble organic compounds capable of coloring cellulose acetate, by employing them in the-form of solubilized, i. e. soluble or more soluble modifications obtained by pretreating them with one or more bodies laving oily'or fatty characteristics containing salt-forming groups capable of forming soluble salts with alkalies or ammonia, for example the sulpho group or the carboxyl grou or both sulpho and carboxyl groups,

or sa tsiof such bodies such for instance as' their sodium or other alkai salts or ammonium salts. For-simplicityI include such bodies and their salts in the term body of oily -or fatty characteristics. In particular according to my said application for U. S. patent one can employ solubilized modifier ,tions obtained*h3tt,reating the said organic compounds or coloring matters with sulphoricinoleic of -other sulphonated fatty 40 acids or'sa'lts"thereof such'as the alkali or ammonium salts.-

- monium salts-1' p e Other bodiesof oil or fatty characteristicsinstanced 'inmy sai U, -S.\ application are for example olei'c, stearic or almitic acid and salts thereof such as the a kali and am- The Specification of my said U. S. application. Serial No. $64,780 gives many examples of classes'of organic compounds or colorin' matters insoluble or of, relatively low so ubility inwater which may be applied in solubilized'modifications as referred tof Amongst these are indicatedvunsulphoa COMPANY LIMITED, A.- COB- nated or other insoluble or relatively insoluble com ounds or coloring matters of the azo c ass (monoazo, disazo, 'trisazo, tetrakisazo and others) .which may or may not contain primary or secondary; or tertiary amino groups such as alkylated or arylated for example as paranitraniline, metanitramline, benzidine, dianisidine, dimethylaniline, alpha naphthylamine and diphenyIlamineh -It is further stated in my said S. specino sulpho basic derivafication that in cases where the compounds J mary amino groups and are diazotizable,

they may be diazotized and developed on the manner to form material in the customary further dyestuffs.

"or coloring matters ap lied in solubilized I modifications as referre to contain free pri- It is further stated-in my-s aid U. S. specification that the solubilized modifications of the organic compounds or coloring matters or of the simple amino bases may beI-em- I ployed for the dyeing of mixedimaterials containin' cellulose acetate associated with cotton, si wool or other threads or libres. Especially it is stated that the solubilized modifications-of favorably constituted organic compounds or coloring matters of the azo class may-be applied'to the dyeing of goods consisting of cellulose acetate and one or more of the-fibres; cotton, wool, silk, artificial silks of the cellulose type, having no aflinit orles's aflinity than the cellulose acebring matters, so that the celluloseacetate is' selectively or preferentially colored thereother fibres, being .d ed or colored to similar or differential s iades relatively to thecellulose acetate by other coloring matters or compounds or the employment of such "t ate or saidsolubilized compounds or 001- i @by, the other fibre,or one or more of the other coloring matters or compounds being A omitted. Also it is stated in my said U. S.

for application by the azoic method may be.

specification that the solubilized modifications of the simple amino bases referred to for the dyeing of such mixed It is further stated in my said U. S. specification that indyeing materials consisting of or containin cellulose acetate with the solubilized modifications of any of the insoluble or relatively low soluble organic similarly ap lie com ounds or coloring matters having an afiimty for cellulose aceate, other dyes may or may not be employed in combination or.

association with them in the same operation, or inseparate operations, for the production of compound shades on the cellulose acetate.

For further particulars and examples of organic compounds or coloring matters insoluble or of relatively low solubility in water, which may be applied in solubilized modifications as aforesaid for dyeing goods consisting of or containing cellulose acetate, and as to the manner in which theygimay be applied, I refer to my said U. S. specification Serial No. 664,780.

Now the present invention likewise concerns thc dyeing of goods such as referred to consisting of or containing cellulose acetate with the aid of solubilized i. e. soluble or more soluble modifications of organic compounds or coloring matters having an aflinity for or capable of coloring cellulose acetate but insoluble, practically insoluble or of relatively low solubilit in water, all of which organic compoun s or a coloring matters are herein included in the expression relatively water-insoluble organic compounds ca able of coloring cellulose acetate.

The so ubilized .modifications employed according to the present invention are prepared with the aid of other solubilizing agents hereinafter specified. Such solubilized modifications may be employed for any of the purposes referred to in my said specification Serial No. 664,780 and an of the water insoluble or relatively low so uble organic compounds or coloring matters or simple amino bases (the latter for applicationby the alzoic method or development) development, it is understood that the expression organic compounds capable of coloring cellulose acetate employed in the present description and claims applies to said simple amino bases in the sense that 7 they are capable of colorin the cellulose acetate by such roduction o a dyethereon,

whether or not t e simple amino bases themselves color cellulose acetate.

I have found-that in any of the "cases referred to in the s ecificationof my said application for U. Patent 664,780, one may employ.wholl y or partly instead of the solubilizing agents therein referred to, other organic bodies as solubilizing agents for the organic compounds or coloring matters or simple ammo bases to be applied to the materials consisting of or containing cellulose acetate I Such other organic solubilizing agents comprise a wide range of non-oleagmous compounds, being organic derivatives containing in their structure one or more salt forming grou s such as the sulphonic, carboxyl, or hy compound contains onl one kind of these groups or different kin s of these groups at the same time) and salts of such bodies; for

(example one ma employ phenols sulphonic acids, carboxyll c acids, phenol-sulphonic acids or other derivatives of the benzene, naphthalene or anthracene series, containing one or mole of any oithese groups; or derivatives of other cyclic hydrocarbons,

saturated or non-saturated, containing one 9 or more of the above mentioned groups, such for example as the naphthenic acids, naphthene sulphonic acids or other carboxylic or sulphonic acids of the cyclo arafiins or one may employ the sodium or ot er saltsof one or more of any of the above mentioned derivatives. All such organic salt-forming derivatives as aforesaid and their salts are heremafter included in the expression carbocyclic-solubilizing agent.

The soluble modifications may be made merely grinding or mixin the solubilizing body or mixtures of solubihzing bodies, with the suitable coloring matter, organic compound or SlIIl le amino base, etc., or by heatmg under or inary atmospheric pressure or under increased or reduced pressure in the presence or absence of water. The soluble modifications of the suitable coloring matter or compound or sim le amino base or mixtures of same may t en be utilized for any of the purposes described in the specification of my said application for U. S. patent. Serial No. 664,780f0r example:-

For the dyein of acet l cellulose,'by simply dissolving the solu 1e modification in hotor cold water, filtering into the dyebath (which may be acid, neutral or alkaline) and conducting the dyein asusual;

For printing or stone ling acetyl celln roxyl groups, (whether the 90 solution of the solu 'ture of such, @by the use of substances such as starches, gums, flour and the. .like, and

applying in' the usual manner, followed by acetate, the employment of relatively waterinsol'uble organic compounds capable of such after-treatment as may berequisite;

For the printing acetyl cellulose material, w ere the com-.

matters, or mixtures of pounds or colorin I such, applied in t e form of their soluble cyclic solubilizingagent inthe'claims is to be read as including any such m1xtures as of such treatment;

For the dyeing or printing of mixed modifications, are primary amines capable goods containing acetyl cellulose, either in uniform shades Orin-contrasting colours'or leaving the material other than the acetyl cellulose uncolored.

It is further understood that mixtures containing different carbocyclicfsolubilizing agents of the-present application for patent may be employed, or mixtures of one or more of them, with one or more of the solubilizin'g' agents of my said application for U. S. Patent S. ll'o. 664,780, and that the expression a medium comprising a carbowell as the individual carbocyclic solubilizing agents themselves I I v The term dyeing in the claims includesdyeing, printing and stencilling.

henic acid class? in the claims hereto comprises the napthenic acids and naphthene su'l'phonic acids, and

The, term body of naph their sodium or other salts.

What I claim and Zdesire to secure by Letters Patent is 1 .1,- In and for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively water'- insoluble .organie'compounds capable of coloring cellulose acetate, 'said organic compounds bein employed in the'form of sol ubiliz'edjmo lfications bbtained by. pretreating them with a medium comprising a carbocyclic solubilizipglagent.

2. In and for t e dyeing'of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively water insoluble prg'anic compounds capable of coloring cellulpse'acetate, 831d organic compounds being employed m the form of -solubili'zedmodifications obtained by pref treating them with a medium comprising' a" insoluble organic compounds capable .of,

coloring cellulose acetate, saidforganic' cornunds being employed in the form cf solnbilized modifications. obtained by preor dyeing of acetyl cellu-' lose by the azoic process, involving diazo tization' and development u on or in the treating them with .a medium comprising a carbocyclic solubilizing agent winch is a naphthenic acid salt. v

' 4. Inand for the dyeing of arns, fabrics and other products comprismg cellulose coloring cellulose acetate, said organic compounds being employed m the form of S01- ubilized modifications obtained by pretreating them with a medium comprising a n'aphthen'ic acid sodium salt.

.5. In and for the dyeing of yarns, fabrics and 'otherfproducts comprising cellulose acetate, the employment of relatively waterinsoluble, organic compounds, capable of. colorang'cellulose acetate, 'saidiorganic compounds being employed in the form of solubilized modificationp obtained by pretreating them with a pii-xtpre comprising a carbocyclic solubilizing agent and a body of oily or fatty characteristics.

6. In and for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively waterinscluble organic compounds, capable of coloring cellulose acetate, said organic compounds being'employed 1n the form of soliibilized modifications obtained by pretreating-themwith a mixture comprlsing a carbocyclicv sol'ubilizing agent which is a derivative of the naphthenic acid'class and a higher fatty acid compound.

7. In and forlthe dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment (if relatively waterinsoluble organic compounds capable of coloring cellulose acetate, said organic com-. pounds being employed in the'form of solubiliz'ed modifications obtained by pretreating them with a mixture comprising a carbocyclicsolubilizing agent which is a derivative of the naphthenic acid class and a sulphonated rici'noleic'acid body.

8. In and for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively waterinsoluble organic compounds capable of coloring cellulose acetate, said organic compounds being employed in the formof sol ubilized modifications obtained by pre treating them with a mixture comprising aj carbocyclic solubilizing agent which, is a naphthenic acid salt and sodium salt of sulphoricinoleic acid.. Y

9.-In' and for the dyeing of yarns, fabrics and other products compris ng cellulose acetate, the em loyment of relatively waterinsoluble organic com ounds of theazo cl'ass'f capable of-coloring oe lulose acetate,sa1d or-- ganic' compounds of the azo class being-employed in the form of solubilized modifica tions obtained by pretreating them with a medium comprisingfa carbocyclic sol-ubiliz}-;-;

ing agent. 1 J

10. In and for the dyeing of yarns, fabrics and other products comprisin cellulose acetate, the employment of re atively water-insoluble organic' compounds of the azo class capable of coloring cellulose acetate, said organic compounds of the azo class being employed in the form of solubilized modifications obtained by pretreating them with a medium comprising a carbocyclic solubilizing agent which is a derivative of the na hthenic acid class.

11, n and for the dyeing of yarns, fabmics, and other products comprising cellulose acetate, the employment of relatively water-insoluble or anic compounds of the azo class capable o colorin cellulose acetate, said organic compounds 0 the azo class be ing employed in the form of solubilized modifications obtained by pretreating them with a medium comprising a carbocyclic solubilizing agent which is a naphthenic acid sat. I

12. In and ,for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the em loyment of relatively waterganic compounds being employed in the form of solubilized modifications o tained by pretreating them with a mixture comprising a carbocyclic solubilizing agent and a body of oily or fatty characteristics.

14. In and for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively water-. insoluble organic compounds of the azo class capable of coloring cellulose acetate, said organic compounds of the azo class bein employed in the form of solubilized mo ificarics and other products comprising cellulose acetate, the employment of relatively waterinsoluble organic com ounds of the azo class" capable'of coloring ce lulose acetate, said or-' ganic compounds of the azo class being employed in the form of solubilized modifications obtained by pretreating them with a mixture comprising a carbocyclic solubilizing agent wh1ch is a derivative of the na hthenic acid class and a sulphonated ricino eic acid body.

16. In and for the dyeing of yarns, fabrics and other products comprising cellulose acetate, the employment of relatively waterinsoluble organic compounds of the azo class capable of coloring cellulose acetate, said organic compounds of the azo class being em-' ployed in the form of solubilized modifications obtained by pretreating them witha mixture comprisrng a carbocyclic solubilizing agent which is a naphthenic acid salt and sodium salt of sulphoricinoleic acid.

In testimony whereof I have hereunto subscribed my name. I

'GEORGE HOLLAND ELLIS-- 

